Bak2Basics: The 4 levels of an information model
Posted by: Sahil Malik - blah.winsmarts.com,
on 16 Aug 2006 |
View original | Bookmarked: 0 time(s)
... what every software engineer should know.
Microsoft recently released a CTP for ADO.NET vNext. Before we can dive into the details and practical implications of what the next rev brings to the table, it is important to cover a few basics first.
At the very heart of it, the next release of ADO.NET vNext targets to bridge the gap between the Conceptual Model and the Logical Model. But what are the various models we deal with? Well, they are;
The Physical Model: Data, on a computer lives in bits and bytes. When we are working at the physical model level, we tend to talk in terms of bits and bytes, various file system structures, paging, caching, heaps, indexes, file allocation records etc. When we used to program...